engrossed

Concise Oxford English Dictionary © 2008 Oxford University Press:
engross /ɪnˈgrəʊs, ɛn-/

▶verb

• 1 (often be engrossed in) absorb all the attention of.

  ■ archaic monopolize.

• 2 Law produce (a legal document) in its final form.

– derivatives
engrossing adjective,
engrossingly adverb.

– origin ME: sense 1 is from OFr. en gros, from med. L. in grosso ‘wholesale’; sense 2 is from Anglo-Norman Fr. engrosser, med. L. ingrossare (from OFr. grosse, med. L. grossa ‘large writing’).